Nếu \(% MathType!MTEF!2!1!+- % feaahqart1ev3aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn % hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr % 4rNCHbGeaGqiVu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq-Jc9 % vqaqpepm0xbba9pwe9Q8fs0-yqaqpepae9pg0FirpepeKkFr0xfr-x % fr-xb9adbaqaaeGaciGaaiaabeqaamaabaabaaGcbaWaa8qCaKaaah % aakmaakaaajaaObaGaamiEaaqcbaAabaqcaaQaaeiiaKaaalaabsga % caWG4baajqwaacqaaiaadggaaeaacaWGIbaajmaWcqGHRiI8aKaaal % abg2da9OWaaSaaaKaaahaacaaIYaaabaGaaG4maaaaaaa!4722! \int\limits_a^b {\sqrt x {\rm{ d}}x} = \frac{2}{3}\)\(% MathType!MTEF!2!1!+- % feaahqart1ev3aqatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn % hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr % 4rNCHbGeaGqiVu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq-Jc9 % vqaqpepm0xbba9pwe9Q8fs0-yqaqpepae9pg0FirpepeKkFr0xfr-x % fr-xb9adbaqaaeGaciGaaiaabeqaamaabaabaaGcbaaeaaaaaaaaa8 % qadaqadaWdaeaapeGaamyyaiabgwMiZkaaicdacaGGSaGaaGPaVlaa % ykW7caWGIbGaeyyzImRaaGimaaGaayjkaiaawMcaaaaa!424F! \left( {a \ge 0,\,\,b \ge 0} \right)\) thì 

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